Freddy Sharp knows first-hand what it feels like to lose it on "bath salts."

The stimulant cocktail — so-named because it is often sold in stores disguised as a common household product such as bath salts in order to skirt legal issues — came into renewed public interest recently after it was linked to the now-notorious "Miami Zombie" attack caught on surveillance camera late last month.

Sharp says he's been off the stuff for several months — ever since an overdose convinced him to quit. "It felt like impending doom was coming down on me," he recalled. "I felt like I was about to bust loose and actually hurt somebody."